Dorothy Hall (scientist)

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Dorothy K. Hall
Alma materUniversity of Maryland
Scientific career
Thesis Analysis of the origin of water which forms large aufeis fields on the Arctic Slope of Alaska using ground and landsat data  (1980)

Dorothy K. Hall is a scientific researcher known for her studies on snow and ice, which she studies through a combination of satellite data and direct measurements. She is a fellow of the American Geophysical Union.

Contents

Education and career

Hall grew up near Washington, D.C. and was interested in the space program, astronomy, and geology. By high school, she had her pilot's license and was taking photographs from planes. In college, she combined these interests to pursue a degree in geographic sciences at the University of Maryland. [1] Hall also earned her Ph.D. from the University of Maryland where she combined field measurements and satellite data to measure aufeis in Alaska. [2]

Hall was a scientist at the National Aeronautics and Space Agency's (NASA) Goddard Space Flight Center, where she served as a scientist in the hydrology division from 1975 until 2003, with a promotion to Senior Scientist in 1989. [3] Hall worked in the cryospheric sciences laboratory at NASA where she led the Moderate Resolution Imaging Spectroradiometer snow and ice imaging program. [3] After retiring from NASA,[ when? ] Hall spent two years at Michigan State University before taking a visiting scientist position at the University of Maryland. [4]

In 2018, Hall was elected a fellow of the American Geophysical Union who cited her "for pioneering, innovative, and sustained research for 44 years on global remote sensing of the Earth's cryosphere". [5]

Research

Hall is known for her research measuring the temperature of the snow and sea, and mapping its spatial extent. While at NASA, Hall worked on the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on the Terra satellite [6] where she focused on the measurements of snow from space. [7] [8] Hall has also used the MODIS instruments on Terra and Aqua to measure the temperature of the ice surface. [9] Hall's research on the surface temperature and extent of ice melt in Greenland [10] has revealed widespread melting of Greenland ice over short periods of time. [11] [12] Her work during field expeditions includes direct measurements of snow and ice, which increases confidence in measurements made from space. [13] [14] Hall's research includes tracking of annual changes in snow levels and the timing of melt in areas including Wyoming, [15] California, [16] and Great Salt Lake in Utah. [17] [18]

Decreased snow levels in the winter of 2011 to 2012 based on snow maps made by Hall using satellite data Snow Deficit (7029632207).jpg
Decreased snow levels in the winter of 2011 to 2012 based on snow maps made by Hall using satellite data

Selected publications

Awards and honors

Related Research Articles

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References

  1. ↑ Jenner, Lynn (2015-05-12). "Dorothy Hall - Fan of Frozen -- Places". NASA. Retrieved 2021-08-26.
  2. ↑ Hall, Dorothy K (1980). Analysis of the origin of water which forms large aufeis fields on the Arctic Slope of Alaska using ground and landsat data (Thesis). OCLC   994495645.
  3. 1 2 "Dorothy K. Hall bio" . Retrieved 26 August 2021.
  4. ↑ West, Teri (2018-02-14). "Dr. Dorothy Hall". Earth System Science Interdisciplinary Center. Archived from the original on 2021-08-26. Retrieved 2021-08-26.
  5. 1 2 "Hall". Honors Program. Retrieved 22 August 2021.
  6. ↑ Justice, C.O.; Vermote, E.; Townshend, J.R.G.; Defries, R.; Roy, D.P.; Hall, D.K.; Salomonson, V.V.; Privette, J.L.; Riggs, G.; Strahler, A.; Lucht, W. (1998). "The Moderate Resolution Imaging Spectroradiometer (MODIS): land remote sensing for global change research". IEEE Transactions on Geoscience and Remote Sensing. 36 (4): 1228–1249. Bibcode:1998ITGRS..36.1228J. doi:10.1109/36.701075. S2CID   17887713.
  7. ↑ Hall, Dorothy K.; Riggs, George A. (2007). "Accuracy assessment of the MODIS snow products". Hydrological Processes. 21 (12): 1534–1547. Bibcode:2007HyPr...21.1534H. doi:10.1002/hyp.6715. ISSN   1099-1085. S2CID   16797236.
  8. ↑ Hall, Dorothy K; Riggs, George A; Salomonson, Vincent V; DiGirolamo, Nicolo E; Bayr, Klaus J (2002). "MODIS snow-cover products". Remote Sensing of Environment. 83 (1–2): 181–194. Bibcode:2002RSEnv..83..181H. doi:10.1016/S0034-4257(02)00095-0. hdl: 2060/20010069265 . S2CID   129808147.
  9. ↑ Hall, D.K.; Key, J.R.; Case, K.A.; Riggs, G.A.; Cavalieri, D.J. (2004). "Sea ice surface temperature product from MODIS". IEEE Transactions on Geoscience and Remote Sensing. 42 (5): 1076–1087. Bibcode:2004ITGRS..42.1076H. doi:10.1109/TGRS.2004.825587. ISSN   0196-2892. S2CID   9571317.
  10. ↑ Hall, Dorothy K.; Comiso, Josefino C.; DiGirolamo, Nicolo E.; Shuman, Christopher A.; Box, Jason E.; Koenig, Lora S. (2013). "Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS". Geophysical Research Letters. 40 (10): 2114–2120. Bibcode:2013GeoRL..40.2114H. doi:10.1002/grl.50240. hdl: 11603/24276 . ISSN   1944-8007. S2CID   128456343.
  11. ↑ Connor, Steve (2012-07-26). "The big thaw: Greenland ice cover is melting away". The Independent. Archived from the original on 2021-08-26. Retrieved 2021-08-26.
  12. ↑ Zielinski, Sarah (May 19, 2014). "Nearly All of Greenland's Surface Melted Overnight in 2012—Here's Why". Smithsonian Magazine. Archived from the original on 2014-05-20. Retrieved 2021-08-26.
  13. ↑ Hall, D; Box, J; Casey, K; Hook, S; Shuman, C; Steffen, K (2008-10-15). "Comparison of satellite-derived and in-situ observations of ice and snow surface temperatures over Greenland". Remote Sensing of Environment. 112 (10): 3739–3749. Bibcode:2008RSEnv.112.3739H. doi:10.1016/j.rse.2008.05.007. hdl: 2060/20080030345 . S2CID   91180832.
  14. ↑ Hall, D.K.; Foster, J.L.; Salomonson, V.V.; Klein, A.G.; Chien, J.Y.L. (2001). "Development of a technique to assess snow-cover mapping errors from space". IEEE Transactions on Geoscience and Remote Sensing. 39 (2): 432–438. Bibcode:2001ITGRS..39..432H. doi:10.1109/36.905251.
  15. ↑ Giese, Jordan (2015-04-03). "Snowpack In Wyoming Melting Earlier". Wyoming Public Media. Archived from the original on 2021-08-26. Retrieved 2021-08-26.
  16. ↑ Lee, Cheril (February 28, 2017). "NASA Views Snow from Space". www.kios.org. Archived from the original on 2017-05-31. Retrieved 2021-08-26.
  17. ↑ "Snowmelt Timing Near the Great Salt Lake". earthobservatory.nasa.gov. 2021-02-04. Retrieved 2021-08-26.
  18. ↑ Hall, Dorothy K.; O'Leary, Donal S.; DiGirolamo, Nicolo E.; Miller, Woodruff; Kang, Do Hyuk (2021). "The role of declining snow cover in the desiccation of the Great Salt Lake, Utah, using MODIS data". Remote Sensing of Environment. 252: 112106. Bibcode:2021RSEnv.252k2106H. doi: 10.1016/j.rse.2020.112106 .
  19. ↑ "Agency Honor Award 2009 Winners" (PDF). Archived (PDF) from the original on 2013-02-17. Retrieved August 25, 2021.
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